Full duplex clock data transmission system and method

Abstract

The invention provides a full duplex clock data transmission system. The system comprises a duplex source end and a duplex receiving end, each of the duplex source end and the duplex receiving end comprises a sending driving module and a receiving processing module used for initializing encoded to-be-sent data; a clock extracting and amplifying module connected with the receiving processing moduleand used for restoring a clock; a receiving data tracking and sampling module connected with the receiving processing module and used for tracking and sampling the received data; a phase locked loopmodule connected with the clock extracting and amplifying module and used for performing locking and frequency doubling on the restored clock; a clock and data restoration module connected with the receiving data tracking and sampling module and the clock extracting and amplifying module and used for restoring the clock from the phase locked loop module and the data from the receiving data tracking and sampling module; and a receiving data decoding and sending data encoding module connected with the clock and data restoration module and used for encoding and decoding the data from the clock and data restoration module.

Description

technical field [0001] The invention relates to the technical field of integrated circuit design, in particular to a full-duplex clock data transmission system and method. Background technique [0002] From the perspective of the structure of the ordinary Ethernet network cable (cat5 / cat6), it can transmit 4 pairs of high-speed data, with a total of 8 wire sequences. In the high-definition audio and video protocol, it includes 3 pairs of A / V link differential data and 1 pair of differential clock. At the same time, the HDbase-T protocol also defines I2C. For ordinary cables, information interaction technology is very important, mainly including: Display Data Channel (DisplayData Channel, DDC), Universal Asynchronous Receiver Transmitter (Universal Asynchronous Receiver Transmitter, UART), Audio Return Channel (Audio Return Channel, ARC) , infrared (Infra-Red, IR) technology, bidirectional data bus (Inter-Integrated Circuit, I2C), universal serial bus (Universal Serial Bus, ...

AI Technical Summary

Problems solved by technology

[0004] There are some disadvantages in PCB board-level implementation: First, there are many discrete devices, which require high-index passive filters, signal amplifiers, etc.; second, there are many devices on the board, and the cost increases; third, it is difficult to realize signal integrity between multiple discrete devices. Increase

In addition, it cannot meet the needs of auxiliary data communication such as UART, ARC, IR, and DDC at the same time

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